Columbia Encyclopedia

Search results

500 results found

gametophyte

(Encyclopedia)gametophyte gəmēˈtəfītˌ [key], phase of plant life cycles in which the gametes, i.e., egg and sperm, are produced. The gametophyte is haploid, that is, each cell contains a single complete set o...

Sammartini, Giovanni Battista

(Encyclopedia)Sammartini, Giovanni Battista jōvänˈnē bät-tēsˈtä säm-märtēˈnē [key], c.1701–75, Italian composer. Sammartini lived most of his life in Milan. He was influential in the development of t...

Kakutani, Shizuo

(Encyclopedia)Kakutani, Shizuo, 1911–2004, Japanese mathematician, b. Osaka, Japan, grad. Tohoko Univ, Ph.D. Princeton, 1941. Kakutani repatriated to Japan during World War II, but returned to Princeton in 1948 a...

Egyptian language

(Encyclopedia)Egyptian language, extinct language of ancient Egypt, a member of the Afroasiatic family of languages (see Afroasiatic languages). The development of ancient Egyptian is usually divided into four peri...

Alabama, river, United States

(Encyclopedia)Alabama, river, 315 mi (507 km) long, formed in central Ala. by the confluence of the Coosa and Tallapoosa rivers N of Montgomery, Ala., and flowing SW to Mobile, Ala., where it joins the Tombigbee to...

rift valley

(Encyclopedia)rift valley, elongated depression, trough, or graben in the earth's crust, bounded on both sides by normal faults and occurring on the continents or under the oceans. The central flat block forming th...

Major Planets of the Solar System (table)

(Encyclopedia)Major Planets of the Solar System ...

Lycurgus, one of the Ten Attic Orators

(Encyclopedia)Lycurgus, c.396–c.325 b.c., one of the Ten Attic Orators of the Alexandrian canon; pupil of Isocrates. A capable and honored public official, he administered the state finances from 338 to 326 b.c. ...

John, three epistles of the New Testament

(Encyclopedia)John, three letters of the New Testament. Traditionally, they are ascribed to John son of Zebedee, the disciple of Jesus. All three letters probably date to the end of the 1st cent. a.d., and may have...

Keokuk, chief of the Sac and Fox

(Encyclopedia)Keokuk kēˈəkək [key], c.1780–1848, Native American, chief of the Sac and Fox, b. near present-day Rock Island, Ill. When Black Hawk supported the British in the War of 1812, Keokuk refused to jo...